Symbol
Hg
  
Os
  
Period Number
6
  
6
  
Block
d block
  
d block
  
Element Family
Transition Metal
  
Transition Metal
  
Space Group Name
R_ 3m
  
P63/mmc
  
Interesting Facts
- At room temperature mercury is found in a liquid state.
- A coin of pound or rupees floats in mercury.
- Because of its low melting point and boiling point it is used in thermometers.
  
- Osmium metal does not oxidize in air unless it is heated.
- But if it heated den it forms Osmium Tetroxide, which is highly toxic.
  
Sources
Mining, Ores of Minerals
  
Found As a By-product, Found in Minerals, Mining
  
History
  
  
Who Discovered
Ancient Chinese and Indians
  
Smithson Tennant
  
Discovery
Before 2000 BCE
  
In 1803
  
Abundance
  
  
Abundance In Universe
Not Available
  
Abundance In Sun
~-9999 %
  
~0.0000002 %
  
25
Abundance In Meteorites
Not Available
  
Abundance In Earth's Crust
Uses & Benefits
- It is a liquid metal at room temperature, but it is a toxic heavy metal and hence many uses of mercury are under review or phased out.
- It is manly used as a catalysts in chemical industry.
  
- Its has very limited uses and its alloys are very hard and are used in the manufacturing of pen tips, pivots, needles and electrical contacts.
-
It is also used as industrial catalyst to speed up the chemical reaction.
  
Industrial Uses
Electrical Industry, Electronic Industry
  
Aerospace Industry, Automobile Industry, Electrical Industry, Electronic Industry
  
Medical Uses
Dentistry
  
NA
  
Other Uses
Alloys, Mirror Manufacturing, Pharmaceutical Industry
  
Alloys
  
Biological Properties
  
  
Toxicity
Highly Toxic
  
Highly Toxic
  
Present in Human Body
Yes
  
No
  
In Blood
0.01 Blood/mg dm-3
  
23
Not Available
  
In Bone
0.45 p.p.m.
  
19
Not Available
  
Melting Point
Not Available
  
Appearance
  
  
Physical State
Liquid
  
Solid
  
Color
Silver
  
Silvery Bluish-Gray
  
Luster
NA
  
Metallic
  
Hardness
  
  
Mohs Hardness
Not Available
  
Brinell Hardness
Not Available
  
3,490.00 MPa
  
1
Speed of Sound
1,451.40 m/s
  
99+
4,940.00 m/s
  
11
Optical Properties
  
  
Refractive Index
Not Available
  
Reflectivity
Not Available
  
Allotropes
No
  
No
  
α Allotropes
Not Available
  
Not Available
  
β Allotropes
Not Available
  
Not Available
  
γ Allotropes
Not Available
  
Not Available
  
Chemical Formula
Hg
  
Os
  
Isotopes
  
  
Electronegativity
  
  
Pauling Electronegativity
Sanderson Electronegativity
Not Available
  
Allred Rochow Electronegativity
Mulliken-Jaffe Electronegativity
Not Available
  
Electropositivity
  
  
Pauling Electropositivity
Ionization Energies
  
  
1st Energy Level
1,007.10 kJ/mol
  
4
840.00 kJ/mol
  
12
2nd Energy Level
1,810.00 kJ/mol
  
20
1,309.80 kJ/mol
  
99+
3rd Energy Level
3,300.00 kJ/mol
  
20
1,600.00 kJ/mol
  
99+
Electrochemical Equivalent
3.74 g/amp-hr
  
10
1.77 g/amp-hr
  
38
Other Chemical Properties
Flammability, Ionization, Solubility
  
Chemical Stability, Ionization, Solubility
  
Electron Configuration
[Xe] 4f14 5d10 6s2
  
[Xe] 4f14 5d6 6s2
  
Crystal Structure
Rhombohedral (RHO)
  
Hexagonal Close Packed (HCP)
  
Crystal Lattice
RHO-Crystal-Structure-of-Mercury.jpg#100
  
BCC-Crystal-Structure-.jpg#100
  
Atom
  
  
Radius of an Atom
  
  
Covalent Radius
Not Available
  
Atomic Volume
14.82 cm3/mol
  
35
8.49 cm3/mol
  
99+
Adjacent Atomic Numbers
  
  
Valence Electron Potential
28.20 (-eV)
  
99+
91.40 (-eV)
  
12
Lattice Angles
NA
  
π/2, π/2, 2 π/3
  
Lattice C/A Ratio
Not Available
  
Density
  
  
Density At Room Temperature
13.53 g/cm
3
  
24
Density When Liquid (at m.p.)
Not Available
  
Tensile Strength
Not Available
  
1,000.00 MPa
  
4
Viscosity
Not Available
  
Vapor Pressure
  
  
Vapor Pressure at 2000 K
Not Available
  
Elasticity properties
  
  
Shear Modulus
Not Available
  
Bulk Modulus
Not Available
  
Poisson Ratio
Not Available
  
Other Mechanical Properties
NA
  
Ductile
  
Magnetic Characteristics
  
  
Magnetic Ordering
Diamagnetic
  
Paramagnetic
  
Electrical Properties
  
  
Electrical Property
Conductor
  
Conductor
  
Electrical Conductivity
0.01 10
6/cm Ω
  
99+
0.11 10
6/cm Ω
  
18
Electron Affinity
0.00 kJ/mol
  
40
106.10 kJ/mol
  
9
Specific Heat
0.14 J/(kg K)
  
38
0.13 J/(kg K)
  
39
Molar Heat Capacity
27.98 J/mol·K
  
13
24.70 J/mol·K
  
99+
Thermal Conductivity
8.30 W/m·K
  
99+
87.60 W/m·K
  
19
Critical Temperature
Not Available
  
Thermal Expansion
60.40 µm/(m·K)
  
5
5.10 µm/(m·K)
  
99+
Enthalpy
  
  
Enthalpy of Vaporization
56.90 kJ/mol
  
99+
627.60 kJ/mol
  
7
Enthalpy of Fusion
2.29 kJ/mol
  
99+
29.30 kJ/mol
  
4
Enthalpy of Atomization
61.50 kJ/mol
  
99+
669.00 kJ/mol
  
6
Standard Molar Entropy
75.80 J/mol.K
  
6
32.60 J/mol.K
  
99+